Ryuuga Genshiro (龍雅 玄士郎 Ryuuga Genshiro) is the Black Dragon God of Shinao's Dragon Grace Lake, as well as a minor antagonist for his obsession for Yunohana Yuuna as his bride, which also leading to his rivalry with Fuyuzora Kogarashi.

Born as one of the prestigious noble to a Dragon God, Genshiro is exceedingly arrogant, conceited, and self-entitled, believing any woman who catches his eye automatically belongs to him. This sense of entitlement goes so far that he automatically assumes any woman who tries to talk to him is asking to become one of his lovers. As such, he has no qualms about openly grabbing said women off the street in an attempt to take them back to his palace. As a member of nobility, he has a tendency to belittle those who are seemingly out of league with the Dragon Clan (which ultimately proves to be his undoing when he attempts to take down Kogarashi, only to be spirit punched through the wall).